tomorrow night's debate focuses on domestic policy, with a segment on the role of government and health care. another journalist writes, after the opening answer, is up for moderator's to decide when a moderator has gone on for too long. our coverage begins tomorrow night with a preview at 7:00 eastern. at 9:00, jim lehrer moderates the debate. after the debates, your calls, e-mail, and tweets. you can follow our live coverage on c-span, c-span radio, and online at c-span.org. coming next, a preview of the presidential debates. scholars examined whether presidential debates still matter. that is followed by a journalist howard kurtz looking at the role of social media in the 2012 elections. another live debate on c-span 2 tonight between jay inslee and rob mckenna. it is considered one of the most -- closest governor races in the country. live on c-span 2 at 10:00 p.m. eastern. president obama and mitt romney are preparing for their first debate. we examine their this hour-long program begins with an update from wall street journal correspondent. >> laura meckler, as we look at the firs